If any records are displayed, these are the files that have been indicated by the Virus Scanner (ForeFront probably - Sigh... Microsoft, come on!) to be infected, thus it will not let you access the file. If you are certain that these files are Virus free (run a manual scan just in case) then run the following query:

You may also want to remove the VirusInfo as well since it usually contains a message saying the file has been infected or something all those lines (it's not important to remove, but I like to restore everything back to original state), run:

UPDATE AllDocsSET VirusInfo = nullWHERE (VirusInfo is not null)

After this is done, you will be able to access the files again. You MAY have to reboot your MOSS server and SQL Server if it still does not work even though the status has been cleared.